Electric safety socket with internal locking means

Abstract

An electric socket with locking means inside; when the plug is inserted into it, the electrical source will be connected, and at the same time, the plug will be locked. To disconnect the plug, a button must first be pushed to release the locking means and disconnect the electrical source. This construction will be very safe because there is no way to contact the electrical source from the socket either with the plug inserted or without the plug inserted. When it is connected, accidental disengagement of the plug and disconnection of the electrical source will not occur.

What is claimed is: 
     
       1. An electric safety socket with internal locking means, comprising an insulated casing (1), an insulated laterally movable member (3) having a pair of spaced bars (33) for insertion into the contact blades of a plug in a locked position by means of a spring in order that a pair of contact members (4) arranged on said contact bars (33) can be brought into engagement with said contact blades when said plug is inserted into the socket, a pair of spring retainers (2) for retention of said laterally movable member (3) in unlocked position, and a pair of actuators (5) for movement of said laterally movable member. 
     
     
       2. A safety socket with internal locking means as claimed in claim 1, wherein said contact members (4) are plates having an enlarged area for engagement with said contact blades of the plug. 
     
     
       3. A safety socket with internal locking means as claimed in claim 1, wherein said actuators (5) have an enlongated extension (511) formed with the cross section of a trapezoid at the intermediate portion thereof. 
     
     
       4. A safety socket with internal locking means as claimed in claim 1, wherein said bars (33) are inserted into holes in the contact blades of the plug. 
     
     
       5. A safety socket with internal locking means as claimed in claim 1, wherein said contact members (4) are removably mounted on said bars (33) by thread means.